Finding the Third Proportional to 1,639,176 and 3,359,280

Step by Step Solution

1. Step 1: Write the proportion equation
   1,639,176 : 3,359,280 = 3,359,280 : x
2. Step 2: Convert to fraction form
   1,639,176/3,359,280 = 3,359,280/x
3. Step 3: Cross multiply
   1,639,176x = 3,359,280 × 3,359,280
4. Step 4: Simplify right side
   1,639,176x = 11,284,762,118,400
5. Step 5: Solve for x
   x = 11,284,762,118,400/1,639,176
6. Step 6: Final answer
   x = 6,884,411.51